diff --git a/analysis_options.yaml b/analysis_options.yaml
index a17b760..8bf901b 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -1,11 +1,82 @@
 include: package:flutter_lints/flutter.yaml
 
+analyzer: 
+  exclude: [lib/**.freezed.dart, lib/**.g.dart]
+
 linter:
   rules:
-    always_declare_return_types: true
-    avoid_init_to_null: true
-    use_string_buffers: true
     prefer_single_quotes: true
     require_trailing_commas: true
+    always_declare_return_types: true
+    avoid_init_to_null: true
     always_put_control_body_on_new_line: true
-    prefer_relative_imports: true
+    always_put_required_named_parameters_first: true
+    # always_specify_types: true
+    # always_use_package_imports: true
+    avoid_annotating_with_dynamic: true
+    avoid_bool_literals_in_conditional_expressions: true 
+    avoid_catches_without_on_clauses: true
+    avoid_catching_errors: true
+    avoid_classes_with_only_static_members: true
+    avoid_final_parameters: true
+    avoid_function_literals_in_foreach_calls: true
+    avoid_relative_lib_imports: true
+    avoid_return_types_on_setters: true
+    avoid_returning_null_for_void: true
+    avoid_shadowing_type_parameters: true
+    avoid_types_as_parameter_names: true
+    await_only_futures: true
+    camel_case_extensions: true
+    camel_case_types: true
+    constant_identifier_names: true
+    control_flow_in_finally: true
+    curly_braces_in_flow_control_structures: true
+    empty_catches: true
+    empty_constructor_bodies: true
+    empty_statements: true
+    exhaustive_cases: true
+    file_names: true
+    void_checks: true
+    implementation_imports: true
+    implicit_call_tearoffs: true
+    library_prefixes: true
+    no_duplicate_case_values: true
+    no_leading_underscores_for_library_prefixes: true
+    no_leading_underscores_for_local_identifiers: true
+    non_constant_identifier_names: true
+    null_check_on_nullable_type_parameter: true
+    null_closures: true
+    prefer_adjacent_string_concatenation: true
+    prefer_collection_literals: true
+    prefer_conditional_assignment: true
+    prefer_contains: true
+    prefer_final_fields: true
+    prefer_function_declarations_over_variables: true
+    prefer_generic_function_type_aliases: true
+    prefer_if_null_operators: true
+    prefer_initializing_formals: true
+    prefer_inlined_adds: true
+    prefer_interpolation_to_compose_strings: true
+    prefer_is_empty: true
+    prefer_is_not_empty: true
+    prefer_is_not_operator: true
+    prefer_iterable_whereType: true
+    prefer_null_aware_operators: true
+    prefer_spread_collections: true
+    recursive_getters: true
+    type_init_formals: true
+    unnecessary_constructor_name: true
+    unnecessary_getters_setters: true
+    unnecessary_late: true
+    unnecessary_new: true
+    unnecessary_null_aware_assignments: true
+    unnecessary_null_in_if_null_operators: true
+    unnecessary_nullable_for_final_variable_declarations: true
+    unnecessary_string_escapes: true
+    unnecessary_string_interpolations: true
+    unnecessary_this: true
+    unnecessary_to_list_in_spreads: true
+    unrelated_type_equality_checks: true
+    use_rethrow_when_possible: true
+    use_string_in_part_of_directives: true
+    use_function_type_syntax_for_parameters: true
\ No newline at end of file
diff --git a/lib/common/models/.gitkeep b/lib/common/models/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/lib/core/config/dependencies.dart b/lib/core/config/dependencies.dart
new file mode 100644
index 0000000..97fb698
--- /dev/null
+++ b/lib/core/config/dependencies.dart
@@ -0,0 +1,39 @@
+import 'package:provider/provider.dart';
+import 'package:provider/single_child_widget.dart';
+
+import '../../data/repositories/auth_repository.dart';
+import '../../data/services/auth_service.dart';
+import '../../data/services/network_manager.dart';
+import '../../view_models/auth_view_model.dart';
+
+List<SingleChildWidget> get providersRemote {
+  return [...cores, ...apiClients, ...repositories, ...viewModels, ...others];
+}
+
+List<SingleChildWidget> get cores {
+  return [Provider(create: (context) => NetworkManager())];
+}
+
+List<SingleChildWidget> get apiClients {
+  return [
+    Provider(create: (context) => AuthService(networkManager: context.read())),
+  ];
+}
+
+List<SingleChildWidget> get repositories {
+  return [
+    Provider(create: (context) => AuthRepository(authService: context.read())),
+  ];
+}
+
+List<SingleChildWidget> get viewModels {
+  return [
+    Provider(
+      create: (context) => AuthViewModel(authRepository: context.read()),
+    ),
+  ];
+}
+
+List<SingleChildWidget> get others {
+  return [];
+}
diff --git a/lib/core/utils/either.dart b/lib/core/utils/either.dart
deleted file mode 100644
index 88828b8..0000000
--- a/lib/core/utils/either.dart
+++ /dev/null
@@ -1,70 +0,0 @@
-typedef OnError<E> = void Function(E error);
-
-abstract class Either<E, S> {
-  const Either();
-
-  E? getError();
-
-  S? getSuccess();
-
-  bool isError();
-
-  bool isSuccess();
-
-  void when({
-    required OnError<E> error,
-    required void Function(S success) success,
-  });
-}
-
-class Success<E, S> extends Either<E, S> {
-  final S _success;
-
-  const Success(this._success);
-
-  @override
-  E? getError() => null;
-
-  @override
-  S? getSuccess() => _success;
-
-  @override
-  bool isError() => false;
-
-  @override
-  bool isSuccess() => true;
-
-  @override
-  void when({
-    required OnError<E> error,
-    required void Function(S success) success,
-  }) {
-    success(_success);
-  }
-}
-
-class Error<E, S> extends Either<E, S> {
-  final E _error;
-
-  const Error(this._error);
-
-  @override
-  E? getError() => _error;
-
-  @override
-  S? getSuccess() => null;
-
-  @override
-  bool isError() => true;
-
-  @override
-  bool isSuccess() => false;
-
-  @override
-  void when({
-    required OnError<E> error,
-    required void Function(S success) success,
-  }) {
-    error(_error);
-  }
-}
diff --git a/lib/data/repositories/auth_repository.dart b/lib/data/repositories/auth_repository.dart
index b1f3726..7c669d8 100644
--- a/lib/data/repositories/auth_repository.dart
+++ b/lib/data/repositories/auth_repository.dart
@@ -6,7 +6,8 @@ import '../services/auth_service.dart';
 class AuthRepository {
   final AuthService _authService;
 
-  AuthRepository(this._authService);
+  AuthRepository({required AuthService authService})
+    : _authService = authService;
 
   Future<Result<UserModel>> login(String email, String password) async {
     try {
diff --git a/lib/data/services/auth_service.dart b/lib/data/services/auth_service.dart
index f1225d2..e8c4f39 100644
--- a/lib/data/services/auth_service.dart
+++ b/lib/data/services/auth_service.dart
@@ -1,4 +1,11 @@
+import 'network_manager.dart';
+
 class AuthService {
+  AuthService({required NetworkManager networkManager})
+    : _networkManager = networkManager;
+
+  final NetworkManager _networkManager;
+
   Future<Map<String, dynamic>> login(String email, String password) async {
     // شبیه‌سازی API Call
     await Future.delayed(const Duration(seconds: 2));
@@ -10,3 +17,20 @@ class AuthService {
     }
   }
 }
+
+//  Future<Result<OnlineGalleryResponse>> getImages(String projectId) async {
+//     try {
+//       final result = await networkManager.makeRequest(
+//         '/api/v1/projects/$projectId/files',
+//         (json) {
+//           Logger().i(json);
+//           return OnlineGalleryResponse.fromJson(json);
+//         },
+//         method: 'GET',
+//       );
+
+//       return Result.ok(result);
+//     } on DioException catch (e) {
+//       return Result.error(e);
+//     }
+//   }
diff --git a/lib/data/services/network_manager.dart b/lib/data/services/network_manager.dart
new file mode 100644
index 0000000..9594504
--- /dev/null
+++ b/lib/data/services/network_manager.dart
@@ -0,0 +1,129 @@
+import 'package:dio/dio.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class NetworkManager {
+  final Dio mainDio;
+
+  NetworkManager()
+    : mainDio = Dio(
+        BaseOptions(
+          // baseUrl: 'https://stage.cura-bau.de',
+          connectTimeout: const Duration(seconds: 10),
+          receiveTimeout: const Duration(seconds: 10),
+          contentType: 'application/json',
+          headers: {'Accept': 'application/json'},
+        ),
+      );
+
+  Future<void> init() async {
+    await addInterceptors();
+  }
+
+  Future<void> addInterceptors() async {
+    final requestInterceptor = InterceptorsWrapper(
+      onRequest: (options, handler) {
+        // TODO: add more
+        return handler.next(options);
+      },
+    );
+
+    mainDio.interceptors.add(requestInterceptor);
+  }
+
+  Future<T> makeRequest<T>(
+    String endpoint,
+    T Function(Map<String, dynamic>) fromJson, {
+    String method = 'GET',
+    FormData? data,
+  }) async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+
+    Dio dioInstance = mainDio;
+
+    await addInterceptors();
+
+    Future<Response> makeApiCall(String token, String url) async {
+      final headers =
+          token.isEmpty
+              ? <String, String>{}
+              : {'Authorization': 'Bearer $token'};
+      switch (method.toUpperCase()) {
+        case 'POST':
+          return await dioInstance.post(
+            url + endpoint,
+            data: data,
+            options: Options(headers: headers),
+          );
+        case 'PUT':
+          return await dioInstance.put(
+            url + endpoint,
+            data: data,
+            options: Options(headers: headers),
+          );
+        case 'PATCH':
+          return await dioInstance.patch(
+            url + endpoint,
+            data: data,
+            options: Options(headers: headers),
+          );
+        case 'DELETE':
+          return await dioInstance.delete(
+            url + endpoint,
+            data: data,
+            options: Options(headers: headers),
+          );
+        case 'GET':
+          return await dioInstance.get(
+            url + endpoint,
+            data: data,
+            options: Options(headers: headers),
+          );
+        default:
+          return await dioInstance.get(
+            url + endpoint,
+            options: Options(headers: headers),
+          );
+      }
+    }
+
+    try {
+      String? bearerToken = prefs.getString('bearer');
+      String? url = prefs.getString('url');
+      Response res = await makeApiCall(bearerToken ?? '', url ?? '');
+      switch (res.statusCode) {
+        case 200:
+        case 201:
+          return fromJson(res.data);
+        case 401:
+          break;
+        case 403:
+          throw Exception('Forbidden: ${res.data['message']}');
+        case 404:
+          throw Exception('Not found: ${res.data['message']}');
+        case 423:
+          throw Exception('Locked: ${res.data['message']}');
+        case 500:
+          throw Exception('Internal server error: ${res.data['message']}');
+        default:
+          throw Exception('Error: ${res.data['message']}');
+      }
+    } on DioException catch (e) {
+      if (e.response?.statusCode == 401) {
+        // await api.refreshToken();
+        String? bearerToken = prefs.getString('bearer');
+        String? url = prefs.getString('url');
+        Response res = await makeApiCall(bearerToken ?? '', url ?? '');
+
+        if (res.statusCode == 200 || res.statusCode == 201) {
+          return fromJson(res.data);
+        }
+
+        throw Exception(e.message ?? 'Error occurred');
+      }
+    } catch (e) {
+      throw Exception(e.toString());
+    }
+
+    throw Exception('Unhandled error occurred');
+  }
+}
diff --git a/lib/view_models/auth_view_model.dart b/lib/view_models/auth_view_model.dart
index e2fbfed..40492ac 100644
--- a/lib/view_models/auth_view_model.dart
+++ b/lib/view_models/auth_view_model.dart
@@ -7,7 +7,8 @@ import '../data/repositories/auth_repository.dart';
 class AuthViewModel with ChangeNotifier {
   final AuthRepository _authRepository;
 
-  AuthViewModel(this._authRepository);
+  AuthViewModel({required AuthRepository authRepository})
+    : _authRepository = authRepository;
 
   bool _isLoading = false;
   String? _errorMessage;
diff --git a/lib/common/widgets/bottom_navigation.dart b/lib/views/shared/bottom_navigation.dart
similarity index 100%
rename from lib/common/widgets/bottom_navigation.dart
rename to lib/views/shared/bottom_navigation.dart
diff --git a/pubspec.lock b/pubspec.lock
index cb7cb86..0bf1efb 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -29,10 +29,10 @@ packages:
     dependency: transitive
     description:
       name: async
-      sha256: d2872f9c19731c2e5f10444b14686eb7cc85c76274bd6c16e1816bff9a3bab63
+      sha256: "758e6d74e971c3e5aceb4110bfd6698efc7f501675bcfe0c775459a8140750eb"
       url: "https://pub.dev"
     source: hosted
-    version: "2.12.0"
+    version: "2.13.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -177,14 +177,38 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.1"
+  dio:
+    dependency: "direct main"
+    description:
+      name: dio
+      sha256: "253a18bbd4851fecba42f7343a1df3a9a4c1d31a2c1b37e221086b4fa8c8dbc9"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.8.0+1"
+  dio_web_adapter:
+    dependency: transitive
+    description:
+      name: dio_web_adapter
+      sha256: "7586e476d70caecaf1686d21eee7247ea43ef5c345eab9e0cc3583ff13378d78"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      sha256: "6a95e56b2449df2273fd8c45a662d6947ce1ebb7aafe80e550a3f68297f3cacc"
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.2"
+    version: "1.3.3"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      sha256: "289279317b4b16eb2bb7e271abccd4bf84ec9bdcbe999e278a94b804f5630418"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
   file:
     dependency: transitive
     description:
@@ -340,10 +364,10 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: c35baad643ba394b40aac41080300150a4f08fd0fd6a10378f8f7c6bc161acec
+      sha256: "6bb818ecbdffe216e81182c2f0714a2e62b593f4a4f13098713ff1685dfb6ab0"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.8"
+    version: "10.0.9"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
@@ -448,6 +472,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.1.0"
+  path_provider_linux:
+    dependency: transitive
+    description:
+      name: path_provider_linux
+      sha256: f7a1fe3a634fe7734c8d3f2766ad746ae2a2884abe22e241a8b301bf5cac3279
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.1"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      sha256: "88f5779f72ba699763fa3a3b06aa4bf6de76c8e5de842cf6f29e2e06476c2334"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  path_provider_windows:
+    dependency: transitive
+    description:
+      name: path_provider_windows
+      sha256: bd6f00dbd873bfb70d0761682da2b3a2c2fccc2b9e84c495821639601d81afe7
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
   petitparser:
     dependency: transitive
     description:
@@ -456,6 +504,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.1.0"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      sha256: "5d6b1b0036a5f331ebc77c850ebc8506cbc1e9416c27e59b439f917a902a4984"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.6"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      sha256: "4820fbfdb9478b1ebae27888254d445073732dae3d6ea81f0b7e06d5dedc3f02"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.8"
   pool:
     dependency: transitive
     description:
@@ -488,6 +552,62 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.5.0"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      sha256: "6e8bf70b7fef813df4e9a36f658ac46d107db4b4cfe1048b477d4e453a8159f5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.3"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      sha256: "20cbd561f743a342c76c151d6ddb93a9ce6005751e7aa458baad3858bfbfb6ac"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.10"
+  shared_preferences_foundation:
+    dependency: transitive
+    description:
+      name: shared_preferences_foundation
+      sha256: "6a52cfcdaeac77cad8c97b539ff688ccfc458c007b4db12be584fbe5c0e49e03"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.5.4"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      sha256: "580abfd40f415611503cae30adf626e6656dfb2f0cee8f465ece7b6defb40f2f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      sha256: "57cbf196c486bc2cf1f02b85784932c6094376284b3ad5779d1b1c6c6a816b80"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      sha256: c49bd060261c9a3f0ff445892695d6212ff603ef3115edbb448509d407600019
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.3"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      sha256: "94ef0f72b2d71bc3e700e025db3710911bd51a71cefb65cc609dd0d9a982e3c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
   shelf:
     dependency: transitive
     description:
@@ -633,10 +753,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: "0968250880a6c5fe7edc067ed0a13d4bae1577fe2771dcf3010d52c4a9d3ca14"
+      sha256: ddfa8d30d89985b96407efce8acbdd124701f96741f2d981ca860662f1c0dc02
       url: "https://pub.dev"
     source: hosted
-    version: "14.3.1"
+    version: "15.0.0"
   watcher:
     dependency: transitive
     description:
@@ -669,6 +789,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.3"
+  xdg_directories:
+    dependency: transitive
+    description:
+      name: xdg_directories
+      sha256: "7a3f37b05d989967cdddcbb571f1ea834867ae2faa29725fd085180e0883aa15"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   xml:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 1936050..3b69769 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -18,6 +18,8 @@ dependencies:
   flutter_svg: ^2.2.0
   go_router: ^16.0.0
   logger: ^2.6.0
+  dio: ^5.8.0+1
+  shared_preferences: ^2.5.3
 
 
 dev_dependencies: